ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 19
Recent Posts
Anyone hiring inspectors?
by gfretwell. 03/27/17 01:36 AM
Old decora style outlets
by Admin. 03/25/17 11:40 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
fuse rejectors
by HotLine1. 03/24/17 07:53 AM
Another Forum Update
by Admin. 03/22/17 03:04 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,551 Are you busy
166,289 Re: Forum
160,676 Need opinion
Who's Online Now
0 registered members (), 43 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#69129 - 08/29/06 07:09 AM feeder protection  
carranoelectric  Offline
Junior Member
Joined: Aug 2006
Posts: 4
stratford ct
Is the secondary feeder from a 75 kva xfrm protected from the primary breaker? I have a 100 amp 480 v breaker on the primary with a 200 amp 208 v secodary to a panel. Do I need a 200 amp main or can I use main lug and have the 100 amp breaker protect the 200 amp feeder?

[This message has been edited by carranoelectric (edited 08-29-2006).]


Work Gear for Electricians and the Trades

#69130 - 08/29/06 07:27 AM Re: feeder protection  
Ron  Offline
Member
Joined: Mar 2002
Posts: 582
White Plains, NY
NEC 2002 240.21(C)(1) says you need a breaker on the secondary within a limited distance.


Ron


Member Spotlight
Lostazhell
Lostazhell
Bakersfield, CA (Originally Orange Co.)
Posts: 1,428
Joined: February 2004
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.012s Queries: 14 (0.003s) Memory: 0.7408 MB (Peak: 0.8577 MB) Zlib enabled. Server Time: 2017-03-27 08:37:41 UTC